Small Intestine Primary Channel

Chinese: 手太阳小肠经

Pinyin: Shǒu Tài Yáng Xiǎo Cháng Jīng

Small Intestine Primary Channel

Pathway for Small Intestine Primary Channel

The external pathway: 

  • The Small Intestine Channel of Hand Tai-Yang originates from Shaoze SI-1, at the ulnar corner of the nail of the little finger. 
  • It connects to a branch of the  Heart Channel at Shaochong HE-9, at the radial corner of the little finger nail. 
  • From SI-1,  the Primary Channel runs up along the ulnar border of the hand and reaches the wrist at Yanglao SI-6.
  • It continues ascending the ulna to the medial aspect of the elbow at Xiaohai SI-8, where it passes between the olecranon of the ulna and the medial epicondyle of the humerus. 
  • Then it runs along the posterior aspect of the upper arm to Naoshu Si-10, at the posterior aspect of the shoulder joint. 
  • Zig-zagging from the inferior fossa to the superior fossa of the scapula through Tianzong SI-11 and Bingfeng SI-12, it then reaches Tianjing SI-13 at the medial aspect of the scapular spine. 
  • It then crosses Dazhui DU-14 of the Governing Vessel at the lower border of the spinous process of C7. 
  • Finally it goes anteriorly to the supraclavicular fossa and reaches Quepen ST-12

The internal pathway: 

Branches: 

Small Intestine Divergent Channel

Chinese: 手太阳经别

Pinyin: Shǒu Tài Yáng Jīng Bié

Small Intestine Divergent Channel

Pathway for Small Intestine Divergent Channel

  • The Small Intestine divergent channel separates from the Primary Channel at Bingfeng SI-12 (or Naoshu SI-10 depends on the school of thought) at the shoulder. 
  • It then descends towards the axilla and reaches Yuanye GB-22, from where it travels internally afterwards. 
  • It then runs inside the chest and arrives at the Heart
  • Afterwards, it descends and penetrates the diaphragm and terminates by spreading in the Small Intestine

Small Intestine Sinew Channel

Chinese: 手太阳经筋

Pinyin: Shǒu Tài Yáng Jīng Jīn

Small Intestine Sinew Channel

Pathway for Small Intestine Sinew Channel

  • The Small Intestine Sinew Channel originates from Shaoze SI-1 at the ulnar aspect of the little finger. 
  • Ascending along the ulnar and dorsum part of the little finger and hand, it binds at the wrist. 
  • It then continues ascending along the ulnar side of the forearm and binds at Yanggu SI-5 of the medial condyle of the humerus at the elbow. 
  • Ascending further along the upper arm, it bends at Xiaohai SI-8 at the posterior aspect of the axilla. 
  • Then it runs behind the axilla and surrounds the scapula. 
  • From there, it goes up the lateral aspect of the neck and binds at the mastoid process anterior to the Bladder Sinew Channel
  • Then it runs further up behind the ear, where a subbranch enters the ear. 
  • From there, it curves around to the top of the ear and then descends to the mandible and binds there. 
  • Afterwards, it ascends again to bind at the outer canthus, crossing the teeth on the way.
  • Finally, it continues ascending and terminates at Benshen GB-13 at the frontoparietal aspect of the head. This is the place it meets the other Hand Yang Sinew Channels as well. 

Small Intestine Luo-Connecting Vessel System

Chinese: 手太阳络脉

Pinyin: Shǒu Tài Yáng Luò Mài

Small Intestine Luo-Connecting Vessel System

Pathway for Small Intestine Luo-Connecting Vessel System

  • The Small Intestine Luo-Connecting Vessel System separates from the Primary Channel at Zhizheng SI-7 of the forearm, where it also connects with the Heart Channel
  • It then ascends to the shoulder and terminates at Jianyu LI-15, after passing the medial condyle of the Humerus. 
  • Some schools of thought claim that the Channel continues by running to Quepen ST-12 in the supraclavicular fossa. Then it penetrates the chest and ends in the Heart